Recalling a visit to Firmenich, a family-owned fragrance company in Geneva, Switzerland, Bill Gates described why he was interested in learning more about applications of odor blocking technology.
First, he put his nose in a glass sniffing tube that smelled of pit latrine odor. Next, he put his nose in a tube with an added fragrance that blocks certain olfactory receptors, doing for our noses what noise cancelling headphones do for our ears. And he sniffed a floral scent.
The big question he poses in his recent blog post “A perfume that smells like poop?” is whether this technology will make a difference for the 1 in 3 people who lack access to improved sanitation. Firmenich, a partner of the Bill & Melinda Gates Foundation, is launching pilots in communities across India and Africa to understand whether the fragrances — whether in spray or powder form — will make toilets and pit latrines more inviting for users.